_________ that he had fallen behind,he tried to work harder.A．Having realizedB．R

题型：不详难度：来源：

_________ that he had fallen behind,he tried to work harder.

A．Having realized

B．Realized

C．Realize

D．To realize

答案

解析

分词的完成式作状语，强调动作在句子的动作前发生。

举一反三

The key _________ the string was put into the door to stop the kite _________.

A．tie to;flying away	B．tying to;fly away
C．tied to;flying away	D．tied to;fly away

题型：不详难度：| 查看答案

Every minute should be _________ lessons.

A．made full use to learn	B．made use of learning
C．made use of to learn	D．used of learning

题型：不详难度：| 查看答案

—What happened to your shoes？ —They want _____ ．

A．to mend

B．being mended

C．mending

D．mended

题型：不详难度：| 查看答案

They enjoyed _____ a wonderful evening at the Country Club．

A．spent

B．to spend

C．spending

D．spend

题型：不详难度：| 查看答案

The boy is only five years old，but he is quite used _____ the telephone．

A．to answer

B．to answering

C．of answering

D．by answering

题型：不详难度：| 查看答案